Lenze i750 User Manual

t
T_InputFilter
T_Input
T_FSoE
T_SafetyPLC
T_FSoE T_Output
T_I
T_Com
T_L
T_Com
T_O
Lenze:
ETG:
Input device
Safety PLC
Output device
T_WD_Out
T_WD_In
T_WDInput T_WDOutput
Fig. 31: FSoE watchdog me
Depending on the input module and the output module used, the c
alculaon
may result in dierent values.
The higher value must always be used for further calculaon to improve the
availability of secure communicaon.
Calculaon of the F
SoE watchdog me
Input module Output module
2 × T_I
+ 4 × T_Com (6 × T_Com) + 4 × T_Com (6 × T_Com)
+ 2 × T_L + 2 × T_L
+ 2 × T_O
+ ΔT (20 %) + ΔT (20 %)
= T_WD_In = T_WD_Out
Calculaon of the ma
ximum response me in case of communicaon interrupon in the input module
Max. response me without SBC Max. response me with SBC
T_InConn_wc 2 × T_S 2 × T_S
+ T_WD_In + T_WD_In
T_OutConn + 2 × T_L + 2 × T_L
+ 2 × T_Com (3 × T_Com) + 2 × T_Com (3 × T_Com)
+ 2 × T_O + 2 × T_O
+ 2 × T_A
= T_SFR _wc (In) = T_SFR _wc (In)
Calculaon of the ma
ximum response me in case of communicaon interrupon in the output module
Max. response me without SBC Max. response me with SBC
T_InConn 2 × T_S 2 × T_S
+ 2 × T_I + 2 × T_I
+ 2 × T_Com (3 × T_Com) + 2 × T_Com (3 × T_Com)
+ 2 × T_L + 2 × T_L
T_OutConn_wc 2 × T_L 2 × T_L
+ T_WD_Out + T_WD_Out
+ 2 × T_A
= T_SFR _wc (Out) = T_SFR _wc (Out)
Calculaon of the ma
ximum response me in case of communicaon interrupon for the enre system
Max. response me without SBC Max. response me with SBC
T_SFR _wc = max {T_SFR _wc (In); T_SFR _wc (Out)} = max {T_SFR _wc (In); T_SFR _wc (Out)}
Funconal sa
fety
Technical data
Calculaon of the maximum response mes
160

Lenze i750 Specifications

General

Brand	Lenze
Model	i750
Category	Inverter
Language	English